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<html lang="en">

  <head>
    <meta charset="UTF-8">
    <title>04_作用域_面试题2</title>
  </head>

  <body>
    <script type="text/javascript">
      // var fn = function () {
      //   console.log(fn)
      // }
      // fn() //fn()

      var obj = {
        fn2: function () {
          //因为fn2没有加this，那么它自动指向window，所以fn2没有定义
          //console.log(fn2) //Uncaught ReferenceError: fn2 is not defined
          //this为这个这个对象obj
          console.log(this.fn2) //fn2
        }
      }
      obj.fn2()
    </script>
  </body>

</html>